Retatrutide
On requestTested forPurity, identity + content
The full Janoshik certificate for the current batch, including the batch code and verification key, is available on request.
Request this reportPurity & lab reports
Every batch tested. Every report checkable.
Every batch is HPLC-tested by Janoshik Analytical. Each certificate is issued in the Peps Central name and carries a verification key, so you can confirm it on Janoshik's own site instead of taking our word for it.
- ✓99%+ purity
- ✓Own-name Janoshik reports
- ✓Verified by The Peptide Watch
Who tests our peptides
Janoshik Analytical
Janoshik is an independent analytical lab in the Czech Republic that specialises in testing peptides and similar compounds. It has no ties to us and is used across the research peptide industry.
Every certificate it issues has a unique verification key. Enter that key on Janoshik's website and it shows you the original result, so a report can't be edited or reused for a different product.
- Lab
- Janoshik Analytical
- Based in
- Czech Republic
- Method
- HPLC
- Independent
- Yes, no ties to us
- Check a report
- janoshik.com ›
How our testing works
1
Sample the batch
A sealed vial is taken from each new production batch and sent to Janoshik with its batch code.
2
Test purity, identity and content
HPLC measures how much of the sample is the target peptide, confirms it is the right compound and checks how many milligrams are actually in the vial.
3
Issue a verification key
Janoshik puts a unique key on the certificate, which anyone can enter on their website to confirm the report is genuine and unedited.
4
Approve or reject
Only batches that meet our purity standard go on sale. Each report is published here with its batch code.
Why a report shows one vial size
Testing is done per batch, not per vial size. A batch of a peptide is made in one go and then split into different sizes, so the purity is the same whether you buy 10mg or 60mg. The certificate lists the size of the vial that was sent to the lab, and it covers every size filled from that batch. Match the batch code on your vial to the one on the report.
Verified lab reports
Current batches. Message us with the compound you're interested in and we'll send you the full certificate to check on Janoshik's site.
Tirzepatide
On requestTested forPurity, identity + content
The full Janoshik certificate for the current batch, including the batch code and verification key, is available on request.
Request this reportBPC-157
On requestTested forPurity, identity + content
The full Janoshik certificate for the current batch, including the batch code and verification key, is available on request.
Request this reportTB-500
On requestTested forPurity, identity + content
The full Janoshik certificate for the current batch, including the batch code and verification key, is available on request.
Request this reportGHK-Cu
On requestTested forPurity, identity + content
The full Janoshik certificate for the current batch, including the batch code and verification key, is available on request.
Request this reportIpamorelin
On requestTested forPurity, identity + content
The full Janoshik certificate for the current batch, including the batch code and verification key, is available on request.
Request this reportTesamorelin
On requestTested forPurity, identity + content
The full Janoshik certificate for the current batch, including the batch code and verification key, is available on request.
Request this reportKLOW Blend
On requestTest scopeIdentity + content
The full Janoshik certificate for the current batch, including the batch code and verification key, is available on request.
Request this reportEarlier batches
When a batch is replaced, its report moves here so you can still check it.
Questions about our testing?
Need a report for a product not listed, or an older batch? Message us and we'll send it over.